<template>
  <HomePanel ref="target" title="热门品牌" sub-title="国际经典 品质保证">
    <template v-slot:right>
      <a :class='{disabled: currentIndex===0}' @click="currentIndex=0" href="javascript:;" class="iconfont icon-angle-left prev"></a>
      <a :class='{disabled: currentIndex===1}' @click="currentIndex=1" href="javascript:;" class="iconfont icon-angle-right next"></a>
    </template>
    <div class="box" ref="box">
      <ul v-if='list.length' class="list" :style="{transform:`translateX(${-currentIndex*1240}px)`}" >
        <li v-for="item in list" :key="item.id">
          <RouterLink to="/">
            <img :src="item.picture" alt="">
          </RouterLink>
        </li>
      </ul>
      <!-- 骨架屏 -->
      <div class='skeleton' v-else>
        <XtxSkeleton class="item" v-for="i in 5" :key="i" animated bg="#e4e4e4" width="240px" height="305px" />
      </div>
    </div>
  </HomePanel>
</template>

<script>
import { useLazyData } from '@/hook'
import HomePanel from './home-pannel'
import { findBrand } from '@/api/home'
import { computed, ref } from 'vue-demi'
export default {
  name: 'HomeBrand',
  components: { HomePanel },
  setup () {
    const { target, list } = useLazyData(() => findBrand(10))
    // 定义当前页码
    const currentIndex = ref(0)
    // 利用计算属性进行翻页
    const plist = computed(() => {
      return list.value.filter((item, index) => {
        if (currentIndex.value === 0) {
          return index < 5
        } else {
          return index > 4
        }
      })
    })
    return {
      target,
      list,
      plist,
      currentIndex
    }
  }
}
</script>

<style scoped lang='less'>
.home-panel {
  background:#f5f5f5
}
.iconfont {
  width: 20px;
  height: 20px;
  background: #ccc;
  color: #fff;
  display: inline-block;
  text-align: center;
  margin-left: 5px;
  background: @xtxColor;
  &::before {
    font-size: 12px;
    position: relative;
    top: -2px
  }
  &.disabled {
    background: #ccc;
    cursor: not-allowed;
  }
}
.box {
  display: flex;
  width: 100%;
  height: 345px;
  overflow: hidden;
  padding-bottom: 40px;
  .list {
    width: 200%;
    display: flex;
    transition: all 1s;
    li {
      margin-right: 10px;
      width: 240px;
      &:nth-child(5n) {
        margin-right: 0;
      }
      img {
        width: 240px;
        height: 305px;
      }
    }
  }
}
.skeleton {
    width: 100%;
    display: flex;
    .item {
      margin-right: 10px;
      &:nth-child(5n) {
        margin-right: 0;
      }
    }
}
</style>
